Manipal MET2019ChemistrySome Basic Concepts of Chemistry
In a mixture of 1 ~g H ₂ and 8 ~g O ₂ the mole fraction of hydrogen is
Options
- A0.667
- B0.5
- C0.33
- DNone of the above
Correct answer
A. 0.667
Step-by-step solution
Number of moles of hydrogen ( H ₂ )= Weight in gram of H ₂ Molecular weight of H ₂ Weight of H ₂ in gram =1 ~g molecular weight of H ₂=2 Number of moles of H ₂= 1 2 =0.5 moles Number of moles of aligned O ₂ & = Weight in g of O ₂ Molecular weight of O ₂ = 8 32 & =0.25 moles aligned Mole fraction of aligned H ₂ & = Number of moles of H ₂ Total number of moles & = 0.5 0.25+0.5 =0.667 aligned